* {
    margin: 0;
    padding: 0;
}

body, html {
    font-size: 62.5%
}
.video-js .vjs-big-play-button{
    top: 50%!important;
    left: 50%!important;
    margin-left: -1.5em!important;
    margin-top: -0.75em!important;
}
@media only screen and (max-width: 1900px) {
    html {
        font-size: 50% !important; /* 15.04÷16=94% */
    }
}

@media only screen and (max-width: 1500px) {
    html {
        font-size: 40% !important; /* 15.04÷16=94% */
    }
}

.wrapp {
    width: 100%;
    background: #150631;
}

.head {
    width: 100%;
    background: #150631;
    position: relative;
}

.head_1 {
    position: relative;
}

.head_2 {
    position: relative;
}

.top_1Img {
    max-width: 100%;
}

.menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    left: 12.6%;
    top: 26%;
    width: 60px;
    align-items: center;
}

.menu_1 {
    display: flex;
    flex-direction: column;
    position: absolute;
    left: 12.6%;
    top: 25.57%;
    width: 60px;
    z-index: 100;
    align-items: center;
}

.homeImg {
    width: 40px;
    height: 40px;
    margin-bottom: 48px;
}

.menuItem {
    font-size: 1.4rem;
    font-family: PingFangSC-Regular;
    font-weight: 400;
    color: rgba(255, 255, 255, 1);
    margin-bottom: 58px;
    text-align: center;
    cursor: pointer;
}

.head {
    position: relative;
}

.logoImg {
    width: 77px;
    height: 81px;
    position: absolute;
    top: 18px;
    left: 50%;
    margin-left: -38.5px;
}

.lineGreen {
    position: absolute;
    width: 100%;
    top: 114px;
}

.title {
    font-size: 4.8rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 4px;
    display: flex;
    flex-direction: column;;
    width: 28%;
    text-align: center;
    align-items: center;
    position: absolute;
    top: 51%;
    left: 50%;
    margin-left: -14%;
}

.line_1 {
    width: 42px;
    height: 10px;
    background: linear-gradient(180deg, rgba(136, 243, 226, 1) 0%, rgba(80, 227, 194, 1) 100%);
    margin-top: 58px;
    border-radius: 5px;
}

.titleXinkong {
    font-size: 4.8rem;
    font-family: PingFangSC-Medium;
    font-weight: 500;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 5px;
    display: flex;
    flex-direction: column;;
    position: absolute;
    text-align: center;
    align-items: center;
    width: 16%;
    top: 8%;
    left: 50%;
    margin-left: -8%;
}

.line_2 {
    width: 28px;
    height: 6px;
    background: linear-gradient(180deg, rgba(136, 243, 226, 1) 0%, rgba(80, 227, 194, 1) 100%);
    margin-top: 48px;
    border-radius: 3px;
}

.xingkongIntrolduce {
    width: 34%;
    font-size: 1.4rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 2px;
    text-align: center;
    position: absolute;
    left: 50%;
    margin-left: -17%;
    top: 28.3%;
}

.xingkongItemBox {
    width: 65%;
    position: absolute;
    height: 32.63%;
    top: 52.42%;
    left: 50%;
    margin-left: -32.5%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.xingkongItem {
    width: 20%;
    height: 100%;
    background: url("../starrysky/img/bg-技术优势.png");
    background-repeat: no-repeat;
    background-size: 100% 100%;
    position: relative;
}

.xingkongItemImg {
    width: 62.5%;
    position: absolute;
    top: -20%;
    left: 50%;
    margin-left: -31.25%;
}

.xingkongInfo {
    width: 70%;
    margin: 0 auto;
    margin-top: 32%;
    font-size: 1.4rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 1px;
}

.xingkongItemFoot {
    width: 57%;
    font-size: 2rem;
    font-family: PingFangSC-Medium;
    font-weight: 500;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 2px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    bottom: 10%;
    left: 50%;
    margin-left: -28.5%;
}

.xingkongItemFootWord {
    margin-bottom: 16px;
}

.lineBlue {
    width: 60%;
    height: 1px;
    background: #43C1CA;
    animation: change 0.5s;
}
@keyframes change{
    from {width: 0px;height: 1px;opacity: 1;background: #43C1CA}
    to {width: 60%;height: 1px;opacity: 1;background: #43C1CA}
}

.tuoGuan {
    width: 100%;
    background: rgba(23, 4, 55, 1);
    padding-top: 5%;
    padding-bottom: 5%;
    position: relative;
}

.tuoGuanBanner {
    width: 80.21%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 0 auto;
    position: relative;
}

.tuoGuanBannerImg {
    width: 80%;
    position: absolute;
    left: 50%;
    top: 0;
    margin-left: -40%;
}

.tuoGuanBannerTitle {
    font-size: 4.8rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 4px;
    display: flex;
    flex-direction: column;;
    width: 28%;
    text-align: center;
    align-items: center;
    margin: 0 auto;
    margin-top: 6%;
}

.tuoGuanBannerContent {
    width: 78%;
    margin: 0 auto;
    margin-top: 5%;
    position: relative;
    display: flex;
    justify-content: space-around;
    align-items: center;

}

.tuoGuanBannerContent_1 {
    clear: both;
    width: 75%;
    margin: 0 auto;
    margin-top: 5%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.tuoGuanBannerContentImg_1 {
    width: 29.83%;
    float: left;
}

.tuoGuanBannerContentImg_2 {
    width: 60.5%;
    float: right;
}
.tuoGuanBannerContentImg_2:hover{
    animation: imgBig_1 0.5s;
    animation-fill-mode : forwards
}
@keyframes imgBig_1{
    0%{transform: scale(1);
        ;}
    100%{transform: scale(1.1);
        }
}

.tuoGuanBannerContentImg_3 {
    width: 60.5%;
}
.tuoGuanBannerContentImg_3:hover{
    animation: imgBig_2 1s;
    animation-fill-mode : forwards
}
@keyframes imgBig_2{
    0%{transform: scale(1);
    ;}
    100%{transform: scale(1.1);
    }
}
.powerItemBoxImg_3:hover{
    animation: imgBig_3 0.5s;
    animation-fill-mode : forwards
}
.powerItemBoxImg_4:hover{
    animation: imgBig_4 0.5s;
    animation-fill-mode : forwards
}
.powerItemBoxImg_5:hover{
    animation: imgBig_5 0.5s;
    animation-fill-mode : forwards
}
@keyframes imgBig_3{
    0%{transform: scale(1);
    ;}
    100%{transform: scale(1.1);
    }
}
@keyframes imgBig_4{
    0%{transform: scale(1);
    ;}
    100%{transform: scale(1.1);
    }
}
@keyframes imgBig_5{
    0%{transform: scale(1);
    ;}
    100%{transform: scale(1.1);
    }
}

.tuoGuanBannerContentImg_4 {
    width: 29.83%;
}

.power {
    width: 100%;
    background: rgba(23, 4, 55, 1);
    position: relative;
}

.powerContent {
    width:80.1%;
    flex-direction: column;
    justify-content: center;
    margin: 0 auto;
    position: relative;
    padding-top: 3%;
    padding-bottom: 5%;
    height: 100%;
}

.powerItemBox {
    width: 78.05%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
    margin-top: 5%;
}

.powerItemBox img {
    width: 30%;
}
.powerTitle {
    font-size: 4.8rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 4px;
    display: flex;
    flex-direction: column;;
    width: 28%;
    text-align: center;
    align-items: center;
    margin: 0 auto;
}
.IPFS {
    background: #170437;
    position: relative;
    height: 673px;
}
.IPFSBox{
    display: flex;
    justify-content: center;
    width: 78.05%;
    top: 25%;
    left: 50%;
    position: absolute;
    margin-left: -39.02%;
    z-index: 99;
}
.IPFSImg_17{
    width: 38.69%;
    position: absolute;
    left: 0;
    top:0;
    /*opacity: 0.5;*/
}
.IPFSImg_16{
    width: 38.69%;
    position: absolute;
    right: 0;
    bottom:0;
    /*opacity: 0.5;*/
}
.IPFSContent{
    width:80.1%;
    flex-direction: column;
    justify-content: center;
    margin: 0 auto;
    position: relative;
    padding-top: 3%;
    padding-bottom: 5%;
}
.contraUsItemBox{
    display: flex;
    justify-content: space-between;
    width:70%;
    align-items: center;
    height: 205px;
    margin: 0 auto;
    margin-top: 50px;
}
.contraUs{
    height:540px;
    background:rgba(23,4,55,1);
    padding-top: 100px;
    position: relative;
}
.shuline{
    height:120px ;
    background: rgba(255,255,255,1);
    width: 1px;
}
.contraUsContent{
    width: 70%;
    margin: 0 auto;
}
.contraUsRight{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    height: 200px;
    width: 40%;
}
.contraUsRightItem{
    display: flex;
    align-items: center;
    width: 100%;
}
.contraUsRight span{
    font-size:2rem;
    font-family:PingFangSC-Regular;
    font-weight:400;
    color:rgba(255,255,255,1);
    letter-spacing:1px;
}
.contraUsRight img{
    width: 42px;
    height: 42px;
    margin-right: 30px;
}
.qcode{
    height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}
.qcode img {
    height: 165px;
    width: 165px;
}
.qcode span{
    font-size:2rem;
    font-family:PingFangSC-Medium;
    font-weight:500;
    color:rgba(255,255,255,1);
    letter-spacing:2px;
}
.contraUsItemTitle{
    font-size: 4.8rem;
    font-family: PingFangSC-Light;
    font-weight: 300;
    color: rgba(255, 255, 255, 1);
    letter-spacing: 4px;
    display: flex;
    flex-direction: column;;
    width: 28%;
    text-align: center;
    align-items: center;
    margin: 0 auto;
}
.action{
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(111,246,216,1);
    color:rgba(111,246,216,1);
    text-align: center;
}
